| Concise |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Jan-2008 |
| PYROTENAX CONCISE #28 CIRCULAR SLIDE RULE CALC | $41.00 | 11-Jan-2008 | 4 |
| Chemist's Concise 600-CE Slide Rule w/ Periodi | $34.99 | 03-Jan-2008 | 1 |
| Concise Circular Slide Rule #270 w/ Cover & Ma | $31.00 | 27-Jan-2008 | 12 |
| CONCISE No. 300 Circular Slide Rule | $27.65 | 03-Jan-2008 | 5 |
| """Concise"" Circular Slide Rule NIB, Circular | $26.99 | 06-Jan-2008 | 2 |
| "Concise 4"" Circular Slide Rule No 260/ Fulle | $20.67 | 27-Jan-2008 | 4 |
| CONCISE CIRCULAR SLIDE RULER 28N MANUAL CASE | $20.50 | 15-Jan-2008 | 8 |
| Concise 28N circular slide rule w/ case + manu | $20.50 | 01-Jan-2008 | 2 |
| Concise 28N circular slide rule w/ case + manu | $18.00 | 18-Jan-2008 | 1 |
| Vintage Concise Circular Slide Rule w/Conversi | $17.50 | 13-Jan-2008 | 17 |
| Concise 28N circular slide rule w/ case + manu | $17.50 | 11-Jan-2008 | 2 |
| "CONCISE ELECTRONIC CIRCULAR SLIDE RULE, CASE | $16.25 | 15-Jan-2008 | 3 |
| Circular Slide Rule Concise CTCS-552 Sama & Et | $16.19 | 17-Jan-2008 | 5 |
| Bell & Howell Concise Circular Slide Rule FREE | $15.75 | 13-Jan-2008 | 2 |
| "Concise 3"" Circular Slide Rule with Case & I | $15.50 | 31-Jan-2008 | 4 |
| "Concise Circular Slide Rule 270, Carry Case, | $15.50 | 12-Jan-2008 | 3 |
| Concise 28N circular slide rule w/ case + manu | $15.00 | 03-Jan-2008 | 1 |
| Concise Circular Slide Rule with Conversions | $15.00 | 19-Jan-2008 | 8 |
| Vintage Concise Circular Slide Rule! L@@K! | $12.50 | 14-Jan-2008 | 4 |
| Combustion Engineering Concise #28 Circular Sl | $11.50 | 15-Jan-2008 | 2 |
| Concise #260 Circular Slide Rule w/ Case | $10.77 | 06-Jan-2008 | 4 |
| CONCISE Circular Slide Rule No. 28 | $10.50 | 20-Jan-2008 | 3 |
| Garrett Concise Circular Slide Rule Complete K | $9.99 | 29-Jan-2008 | 1 |
| "Concise 3"" Circular Slide Rule Model NO. 28 | $9.00 | 28-Jan-2008 | 2 |
| CIRCULAR SLIDE RULE CONCISE 28N w/ Manual & Po | $6.99 | 06-Jan-2008 | 1 |
| Circular Slide Rule by Concise | $6.00 | 27-Jan-2008 | 3 |
| Concise Circular Slide Rule & Instruction shee | $1.99 | 06-Jan-2008 | 1 |
| NEW Sama Etani Concise circular Slide Rule Mod | $59.95 | 12-Jan-2008 | 0 |
| NEW Sama Etani Concise circular Slide Rule Mod | $59.95 | 21-Jan-2008 | 0 |
| NEW Sama Etani Concise circular Slide Rule Mod | $59.95 | 14-Jan-2008 | 0 |
| Concise 28N circular slide rule w/ case + manu | $17.50 | 07-Jan-2008 | 0 |
| Concise Circular Slide Rule | $10.00 | 09-Jan-2008 | 0 |
| "Concise 3"" Circular Slide Rule with Case & I | $9.00 | 28-Jan-2008 | 0 |
| concise slide rule | $4.99 | 03-Jan-2008 | 0 |